The casino never reveals the criteria it uses to detect multiple accounts. Some people think changing the internet connection or using a VPN will make them undetectable. A casino can use different ways to detect multiple accounts. It could be wallet reuse, IP address, same device, or even the same browser. There might be other ways that they use to detect multiple accounts, and the gambler do not have any idea about it.
When people think they will be able to dodge the casino, they are fooling themself. They will eventually get caught and later blame the casino. All we can say is sorry to them for getting their account banned.
Casinos are filled with people who are very knowledgeable about the system, so if we think we can cheat them, it's a big mistake because they're definitely much smarter. They have security systems in place to help them enforce existing rules, so it's best to avoid even thinking about cheating the casino.
That's a last resort for cheaters: they'll come to forums and claim the casino cheated them. And their mistake is that they don't realize that many users of the casinos they're referring to also share their experiences. So, usually, before their representatives appear on these forums, many people will have already asked them questions.
There are so many tools casinos can use to detect if a player is playing from a restricted region or not. Some of these tools are paid why some can be programmed. We don't have to think like we are smarter than the casino that allow us to play bet on their platform because they own our funds and can at the same time check if we are actually following their teams or not. There are plenty of ways to detect the . location of a player and when something is fishy, the casino can request for KYC from the player which is when everything will be unveiled.